Pneumatic-tire signal



L. H; UNGLESBY PNEUMATIC TIRE SIGNAL Filfed oct. 25. 192e INVENTOR L H (A1/@M552 BY mw vo.

ATTORNEYS l Patented Apr; 17.7,'

nEwIs H. UNGLESBY, oF BATON ROUGE, LoforsIANAfAssIeNon oF ONE-'HALF To BILL H, HUGHES, or BaroNRoUGE, Louisiana, i

" j PNEUMATIo-TIRE SIGNAL@ Application ,mea amber 25, 1926. seriai No. 144,105.

invention relates to improvements iiiv signals for pneumatic tires to indicate when they are abnormally deflated,and it consists in the combinations, constructions, vand arrangements herein described and claimed.

vvAn object of my invention isv to ,provide l a simple device which will give an audible warning when the pressure within the tire has decreasedbeyond a definite amount. y A further object of ktlie'inventionis to Y Vprovide a device of the type described which canbe readily applied` to t-he wheels ofautomobiles equipped with pneumatic tires with Acomparatively little trouble.

A further object is to providela'device of the type described, which is so situatedas to iured.

prevent theapparatus from beingvinin the following specification, and thenovel features of the invention will be particularly pointed out in the appended claim. y

, My invention is illustrated in the accomv panying drawings, forming part of this application, in which Figure 1 is a side view of a wheel equipped with my invention,

Figure 2 is an enlarged section along the f line 2-2 of Figure 1,

Figure 3 is a side view of the device shown in Figure 2, and

- Figure 4; is a sectionralong the line H of Figure 2.

A In'the drawings, 1 indicatesthe outer ca sing, and 2 the inner casing of a pneumatic tire which is secur'ed'to' arirn 3 on a metal l Y covered fellye, the construction thus far described being that ordinarily found in autornobiles of the present type.v My improve-y A0 ment consists inproviding a housing 5 of any suitable material, having an'. extension 6 on one side thereof, by means of which it may ybe secured to the Itelly. 4. Tothis end I pro-` vide a bolt 7 which' extends through the felly ,i to whichis pivotally connected at 11 any armv 12,. which, as. will be observed, extends `into 1 adjacentto the rim.

Other objects and advantages will appear' contact with thatportion of theouter On the inner side of they casingV is a post l13 which is secured to the casing in any suit- ,y vf

able manner, as by a nut 14. vThispost bears a bell 15 at its end. Pivotallymounted at 16 on the post is a"clap`per 17, having an arm 18, which.extendsfbeyond.the pivotal" point. The rod 12 is pivotally'connected at sov 19 with a slidable rodor bar20, which passesf through vthe casing, being Iiournaled in the walls of thecasing, as shown. 4This rod 2O has a finger 21 secured thereto, which is arl-1 ranged to engage the extension 18jk A spiral- Vspring 22 surrounds thefrod 20 and bears atone end against thecasing wall, and at the'v other on the finger 21.` A' spiral spring 23A Y 4is connected at one end to thecasing wall and at the other end totheclapper shank on the opposite sides of the pivot 16 from thel extension 18.v

'From the foregoing description ofthe various parts of the device, the operation thereof may bereadily understood. As longv as the'tire isrilled with air, there will be rrelatively little movement of the tireat the point of contact of the rod- 12 therewith. Vlien, however, the tireis deflated beyond a given amount, ythen the movement of the Ive# hicle will causethe tire to give, .so as'to move the rod 12 outwardly at every revolution of.l

This will cause the rod.v 2O to be pushed inwardly against the tension'of the spring 22, and the finger 21 will act on VV the wheel.'

the extension 18 to-k throwthe olapper-l 17` against the bell 15thus giving an Vaudible sojwarning that the tire has reached a point; ,l i

AwhereitA should be inflated.`

`When the -tire is infiated, the conditions" nare-as before, and a -very slightnioveinent of the tire will not be suflicient to throw lthev clapper against thev bell. It will be seen that I have provided a Warning signal which is automatically operated-whenever the defla- Y 's tion ofthe tire reaches a predetermined I claim: I

4A signaling device. for vpneumatic tires, y, f comprising aA casing having an extensionon one sidetbereof, means for securing said` extension to the felly of a Wheel, a lever pvotally carried by said slidable bar and arranged mounted on the outside of the Casing and to engage one end of said pvoted clapper 10 arranged to be engaged by the movement of for initially moving and subsequently rethe tire when the latter is partially deflated, leasing the latter, and a spring connected a bell disposed Within the casing, a pivotto said clapper'for retract-fing the same after ally mounted elapper, aV spring-pressed sldits release bythe fingen:

ableJ bar carried by the casing andrbeng pvotally connected with the lever, a finger LEWIS H. UNGLESBY. 

